[ 19s] Setup: Missing dependency on a foreign library:
[ 19s] * Missing (or bad) header file: lua.h
[ 19s] This problem can usually be solved by installing the system
package that
[ 19s] provides this library (you may need the "-dev" version). If
the library is
[ 19s] already installed but in a non-standard location then you can
use the flags
[ 19s] --extra-include-dirs= and --extra-lib-dirs= to specify where
it is.
[ 19s] If the header file does exist, it may contain errors that are
caught by the C
[ 19s] compiler at the preprocessing stage. In this case you can re-
run configure
[ 19s] with the verbosity flag -v3 to see the error messages.
[ 19s] error: Bad exit status from /var/tmp/rpm-tmp.bFkuRr (%build)

but in all honesty: nothing of that is 'secret' and 'hidden', and if I
have to answer all mails with a full trace and debug why something
fails, I'll probably just stop reporting the root cause for such
issues... there are funnier things to do than copying all the
intermediate links into emails (which everybody can find out, without
much hassle)

In plus, there is nothing left to be done for anybody anyway:https://build.opensuse.org/request/show/517341 had been submitted to
fix the issue, it has been accepted into the devel prj (sadly not
forwarded to openSUSE:Factory yet though - I assume the maintainer
wanted to see this build completely in the devel prj first).